#ifndef _MESH_HPP_
#define _MESH_HPP_
#include <stdio.h>
#include <mdiwin/string.hpp>
#include <mdiwin/segment.hpp>
#include <mdiwin/window.hpp>
#include <mdiwin/polypnt.hpp>
#include <mdiwin/vector.hpp>

class GridMesh : public Vector<Segment>, public Window
{
public:
	enum GridShow{Show,NoShow};
	GridMesh(HWND hParent,int width,int height,GridShow visibility=Show);
	~GridMesh(void);
	void newMesh(WORD gridLines=GridLines);
	WORD saveMesh(String &pathFileName);
	WORD loadMesh(String &pathFileName);
	WORD retrieveMesh(Vector<Point> &sourcePoints,Vector<Point> &destPoints);
	WORD rowCols(void)const;
	WORD gridLines(void)const;
	WORD upgradeStatus(WORD retCode);
	WORD isVisible(void)const;
	void showWindow(int visible=TRUE);
	void suspendMesh(WORD suspend);
private:
	typedef LONG Index;
	enum Status{InActive,Active};
	enum {IntersectionSegments=4};
	enum {GridLines=8,MaxGridLines=16};
	void registerClass(void);
	long WndProc(UINT message,WPARAM wParam,LPARAM lParam);
	void paint(void);
	void mouseUp(int x,int y);
	void mouseDown(int x,int y);
	void mouseMove(int x,int y);
	DWORD minDistance(const Segment &someSegment,const Point &mousePoint);
	WORD closestIntersection(Block<Segment> &filterSegment,Point &mousePoint);
	WORD orderIntersection(Block<Segment> &intersection);
	WORD isInBlock(Block<Segment> &source,Segment &someSegment);
	void createMesh(WORD gridLines,Vector<Segment> &someSegmentVector);
	WORD retrieveMesh(Vector<Point> &meshPoints,Vector<Segment> &meshSegments)const;

	static char szClassName[];
	static char szMenuName[];
	Block<Segment> mCurrentIntersection;
	int mGridLines;
	Status mStatus;
	String mVersionInfo;
	WORD mIsSuspended;
	COLORREF mStandardColor;
	HPEN mhDrawingPen;
	HWND mhParent;
	HINSTANCE mhInstance;
};

inline
WORD GridMesh::isVisible(void)const
{
	return ::IsWindowVisible(GetHandle());
}

inline
WORD GridMesh::gridLines(void)const
{
	return mGridLines;
}

inline
WORD GridMesh::rowCols(void)const
{
	return mGridLines+2;
}

inline
void GridMesh::suspendMesh(WORD suspend)
{
	if(suspend)mIsSuspended=TRUE;
	else mIsSuspended=FALSE;
}
#endif